IMHO I'm suspecting that people are dumping their alts to get into bitcoin to profit from BCC and that's what has been fueling the BTC price rise lately and it explains the drop in most alts we are seeing today
If it's the case then we might see more BTC strength and more alts weakness until Aug 1st when people will be taking profit by selling BCC and may be reentering the alts market
That's exactly what I'm planning to do, holding my BTC until the 1st then buying back all the alts I use to own (I sold all my alts for BTC earlier this month)